17.5×0.25+12.5÷4的简便方法
问题描述：
17.5×0.25+12.5÷4的简便方法
答
17.5×0.25+12.5÷4
=17.5×0.25+12.5×1/4
=17.5×0.25+12.5×0.25
=(17.5+12.5)×0.25
=30×0.25
=7.5